Partially Averaged Navier-Stokes Modelling of Turbulent Channel Flow with and without Forcing

Ma, Jiamei; Davidson, Lars; Peng, Shia-Hui; Wang, Fujun

doi:10.1615/ichmt.2009.turbulheatmasstransf.760

Cited by 2 publications

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“…The approach was applied to channel flow and the flow around an airfoil. Forcing was also used in Ma et al, 8 which was created using the SGS stress tensor from a scale-similarity model by selecting only the instantaneous SGS stress that contributes to backscatter. 9 Shur et al 10 proposed a new recycling method in a interface zone between RANS and LES.…”

Section: Introductionmentioning

confidence: 99%

Embedded Large-Eddy Simulation Using the Partially Averaged Navier–Stokes Model

Davidson

Peng

2013

AIAA Journal

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An embedded LES modelling approach is explored and verified using the PANS (Partially Averaged Navier-Stokes) model as a platform. With the same base model, the turbulence-resolving LES region is embedded by setting the PANS model coefficient to f k < 1 as distinguished from its neighboring RANS region, where f k = 1 is specified. The embedded LES approach is verified in computations of a turbulent channel flow and a turbulent flow over a hump. Emphasis is placed on the impact of turbulent conditions at the RANS-LES interface using anisotropic velocity fluctuations generated from synthetic turbulence. The effect of the spanwise size of the computational domain is investigated.It is shown that the embedded LES method based on the PANS modelling approach is computationally feasible and able to provide reasonable turbulence-resolving predictions in the embedded LES region. The WALE (Wall-adapting local eddy-viscosity) model is also evaluated for the hump flow and it is found that its performance is worse than that of the the LRN (Low-Reynolds Number) PANS model when the results are compared with experiments.

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Section: Introductionmentioning

confidence: 99%

Embedded Large-Eddy Simulation Using the Partially Averaged Navier–Stokes Model

Davidson

Peng

2013

AIAA Journal

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“…The approach was applied to channel flow and the flow around an airfoil. Forcing was also used in Ma et al, 6 which was created using the SGS stress tensor from a scale-similarity model by selecting only the instantaneous SGS stress that corresponds to backscatter. 12 In the present work, an embedded LES method is verified and applied to turbulent channel flow and a flow over a hump.…”

Section: Introductionmentioning

confidence: 99%

Embedded LES Using PANS

Davidson

Peng

2011

6th AIAA Theoretical Fluid Mechanics Conference

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An embedded LES modelling approach is explored and verified using the PANS (Partially Averaged Navier-Stokes) model as a platform. With the same base model, the turbulence-resolving LES region is embedded by setting the PANS model coefficient to f k < 1 as distinguished from its neighboring RANS region, where f k = 1 is specified. The embedded LES approach is verified in computations of a turbulent channel flow and a turbulent flow over a hump. Emphasis is placed on the impact of turbulent conditions at the RANS-LES interface using anisotropic velocity fluctuations generated from synthetic turbulence. The effects of model coefficient f k in the LES region, as well as of the spanwise size of the computational domain and the grid resolution in this direction, are also investigated. It is shown that the embedded LES method based on the PANS modelling approach is computationally feasible and able to provide reasonable turbulence-resolving predictions in the embedded LES region.

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Partially Averaged Navier-Stokes Modelling of Turbulent Channel Flow with and without Forcing

Cited by 2 publications

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Embedded Large-Eddy Simulation Using the Partially Averaged Navier–Stokes Model

Embedded Large-Eddy Simulation Using the Partially Averaged Navier–Stokes Model

Embedded LES Using PANS

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